Pycmtensor

Feat

- **expressions**: added Weights class object (59)
- **functions**: added rmse and mae objective functions (58)
- batch shuffle for training
- **function**: added KL divergence loss function (50)

Fix

- added expand_dims into logit function
- replace class function Beta.Beta with Beta.beta
- removed flatten() from logit function

Feat

- **scheduler**: added learning rate scheduling to train()
- **code**: overhaul and cleanup

Fix

- **environment**: update project deps and pre-commit routine
- **config**: remove unnecessary cxx flags from macos builds

Perf

- **config**: misc optimization changes

Fix

- **config**: added optimizing speedups to config
- **config**: set default `cyclic_lr_mode` and `cyclic_lr_step_size` to `None`
- **pre-commit-config**: update black to `22.6.0` in pre-commit check

Refactor

- **models**: refactored build_functions() into models.py
- **database**: refactor set_choice(choiceVar)

Fix

- **tests**: removed depreciated tests
- **routine**: remove depreciated tqdm module

Fix

- **pycmtensor.py**: update training method
- **config.py**: new config option verbosity: "high", "low"
- **pycmtensor.py**: remove warnings for max_iter<patience